FFmpeg: libavcodec/ratecontrol.c File Reference

FFmpeg 4.0

libavcodec

Rate control for video encoders. More...

#include "libavutil/attributes.h"
#include "libavutil/internal.h"
#include "avcodec.h"
#include "internal.h"
#include "ratecontrol.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "libavutil/eval.h"

Go to the source code of this file.

Functions
void	ff_write_pass1_stats (MpegEncContext *s)

static double	get_fps (AVCodecContext *avctx)

static double	qp2bits (RateControlEntry *rce, double qp)

static double	bits2qp (RateControlEntry *rce, double bits)

static double	get_diff_limited_q (MpegEncContext s, RateControlEntry rce, double q)

static void	get_qminmax (int qmin_ret, int qmax_ret, MpegEncContext *s, int pict_type)
	Get the qmin & qmax for pict_type. More...

static double	modify_qscale (MpegEncContext s, RateControlEntry rce, double q, int frame_num)

static double	get_qscale (MpegEncContext s, RateControlEntry rce, double rate_factor, int frame_num)
	Modify the bitrate curve from pass1 for one frame. More...

static int	init_pass2 (MpegEncContext *s)

av_cold int	ff_rate_control_init (MpegEncContext *s)

av_cold void	ff_rate_control_uninit (MpegEncContext *s)

int	ff_vbv_update (MpegEncContext *s, int frame_size)

static double	predict_size (Predictor *p, double q, double var)

static void	update_predictor (Predictor *p, double q, double var, double size)

static void	adaptive_quantization (MpegEncContext *s, double q)

void	ff_get_2pass_fcode (MpegEncContext *s)

float	ff_rate_estimate_qscale (MpegEncContext *s, int dry_run)

Detailed Description

Rate control for video encoders.

Definition in file ratecontrol.c.

Function Documentation

◆ ff_write_pass1_stats()

void ff_write_pass1_stats ( MpegEncContext * s )

Definition at line 38 of file ratecontrol.c.

Referenced by encode_frame(), and ff_mpv_encode_picture().

◆ get_fps()

static double get_fps ( AVCodecContext * avctx )

static

Definition at line 59 of file ratecontrol.c.

Referenced by ff_rate_control_init(), ff_rate_estimate_qscale(), ff_vbv_update(), init_pass2(), and modify_qscale().

◆ qp2bits()

static double qp2bits	(	RateControlEntry *	rce,
		double	qp
	)

inlinestatic

Definition at line 64 of file ratecontrol.c.

Referenced by ff_rate_control_init(), get_qscale(), and init_pass2().

◆ bits2qp()

static double bits2qp	(	RateControlEntry *	rce,
		double	bits
	)

inlinestatic

Definition at line 72 of file ratecontrol.c.

Referenced by ff_rate_control_init(), get_qscale(), and modify_qscale().

◆ get_diff_limited_q()

static double get_diff_limited_q	(	MpegEncContext *	s,
		RateControlEntry *	rce,
		double	q
	)

static

Definition at line 80 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and init_pass2().

◆ get_qminmax()

static void get_qminmax	(	int *	qmin_ret,
		int *	qmax_ret,
		MpegEncContext *	s,
		int	pict_type
	)

static

Get the qmin & qmax for pict_type.

Definition at line 119 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and modify_qscale().

◆ modify_qscale()

static double modify_qscale	(	MpegEncContext *	s,
		RateControlEntry *	rce,
		double	q,
		int	frame_num
	)

static

Definition at line 147 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale(), and init_pass2().

◆ get_qscale()

static double get_qscale	(	MpegEncContext *	s,
		RateControlEntry *	rce,
		double	rate_factor,
		int	frame_num
	)

static

Modify the bitrate curve from pass1 for one frame.

Definition at line 238 of file ratecontrol.c.

Referenced by ff_rate_control_init(), ff_rate_estimate_qscale(), and init_pass2().

◆ init_pass2()

static int init_pass2 ( MpegEncContext * s )

static

Definition at line 311 of file ratecontrol.c.

Referenced by ff_rate_control_init().

◆ ff_rate_control_init()

av_cold int ff_rate_control_init ( MpegEncContext * s )

Definition at line 472 of file ratecontrol.c.

Referenced by encode_init(), and ff_mpv_encode_init().

◆ ff_rate_control_uninit()

av_cold void ff_rate_control_uninit ( MpegEncContext * s )

Definition at line 672 of file ratecontrol.c.

Referenced by encode_end(), ff_mpv_encode_end(), and ff_rate_control_init().

◆ ff_vbv_update()

int ff_vbv_update	(	MpegEncContext *	s,
		int	frame_size
	)

Definition at line 681 of file ratecontrol.c.

Referenced by ff_mpv_encode_picture(), init_pass2(), and select_input_picture().

◆ predict_size()

static double predict_size	(	Predictor *	p,
		double	q,
		double	var
	)

static

Definition at line 723 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

◆ update_predictor()

static void update_predictor	(	Predictor *	p,
		double	q,
		double	var,
		double	size
	)

static

Definition at line 728 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

◆ adaptive_quantization()

static void adaptive_quantization	(	MpegEncContext *	s,
		double	q
	)

static

Definition at line 740 of file ratecontrol.c.

Referenced by ff_rate_estimate_qscale().

◆ ff_get_2pass_fcode()

void ff_get_2pass_fcode ( MpegEncContext * s )

Definition at line 857 of file ratecontrol.c.

Referenced by encode_picture().

◆ ff_rate_estimate_qscale()

float ff_rate_estimate_qscale	(	MpegEncContext *	s,
		int	dry_run
	)

Definition at line 868 of file ratecontrol.c.

Referenced by encode_frame(), estimate_qp(), and ratecontrol_1pass().